<template>
  <div>
    <el-divider content-position="left">Upload</el-divider>
    <el-row>
      <el-upload
        class="upload-demo"
        action="https://jsonplaceholder.typicode.com/posts/"
        :on-preview="handlePreview"
        :on-remove="handleRemove"
        :file-list="fileList"
        list-type="picture">
        <el-button size="small" type="primary">点击上传</el-button>
        <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
      </el-upload>
    </el-row>
    <el-row>
      <el-upload
        class="upload-demo"
        action="https://jsonplaceholder.typicode.com/posts/"
        :on-change="handleChange"
        :file-list="fileList">
        <el-button size="small" type="primary">点击上传</el-button>
        <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
      </el-upload>
    </el-row>
    <el-row>
      <el-upload
        class="upload-demo"
        drag
        action="https://jsonplaceholder.typicode.com/posts/"
        multiple>
        <i class="el-icon-upload"></i>
        <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
        <div class="el-upload__tip" slot="tip">只能上传jpg/png文件，且不超过500kb</div>
      </el-upload>
    </el-row>
    <el-row>
      <el-upload
        action="https://jsonplaceholder.typicode.com/posts/"
        list-type="picture-card"
        :on-preview="handlePictureCardPreview"
        :on-remove="handleRemove">
        <i class="el-icon-plus"></i>
      </el-upload>
      <el-dialog :visible.sync="dialogVisible">
        <img width="100%" :src="dialogImageUrl" alt="">
      </el-dialog>
    </el-row>
  </div>
</template>
<script>
  export default {
    data() {
      return {
        fileList: [{
          name: 'food.jpeg',
          url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100'
        }, {
          name: 'food2.jpeg',
          url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100'
        }],
        dialogImageUrl: '',
        dialogVisible: false
      };
    },
    methods: {
      handleRemove(file, fileList) {
        console.log(file, fileList);
      },
      handlePreview(file) {
        console.log(file);
      },
      handleChange(file, fileList) {
        this.fileList = fileList.slice(-3);
      },
      handlePictureCardPreview(file) {
        this.dialogImageUrl = file.url;
        this.dialogVisible = true;
      }
    }
  }
</script>
